Aerogels are the World’s Lightest Solids

Aerogels

Aerogels are the world’s lightest solids. They are also great thermal insulators and have been used in many Mars missions and the Stardust comet particle-return mission.

The focus of this video by Veritasium is silica aerogels, though graphene aerogels are now technically the lightest. Check out the video below.

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